Prehistoric humans were sexual adventurers, mating with Neanderthals and Denisovans, but DNA studies reveal an alliance with populations we never knew existed!
Really?!? I mean this is another attempt at undermining ancient Africans Birth-Right to being the first hue-mans and first organized societies ever.This is the latest in their on going quest to re-write our story to include his-story.I have done (my own)extensive research in this(our story) field and i can say for certain…there is NO ghost DNA,what they won’t say is that their research is NOW including the Semite/halfbreed/Denisoven neanderthals.These people are nothing more than mixed race neanderthals,just like the biracial people of today, this is no different.These people will do anything to gain fame or lie to get attention. The first hue-mans were ancient black people and they will always be the first. Get over yourselves! sungod64
WE LEARN about our ancestors in many ways. Bones tell us what they looked like. Teeth reveal their diet. Tools, pots, art and other artefacts hold stories about their culture. Then, a decade ago, the first ancient genome was sequenced, opening a whole new window on our past – one that promised more intimate insights.
The breakthrough famously revealed that Neanderthals got very cosy with humans. Since then, geneticists have been probing more and more fossils for evidence of past cross-species dalliances. The studies haven’t disappointed. But in an intriguing twist, they have started to kick up something unexpected: hidden inside genomes are signs of ancestors that we never knew existed. Geneticists call them “ghosts”.
We have no physical record of these ancient hominins – no bones, no tools, no archaeological remains whatsoever. Yet the genetic code that they left within fossils of other hominins, and in living humans too, is offering profound and unprecedented insights into how our species came to be, and what the world was like at the time.
The idea that each of our cells might contain fragments of genetic code from extinct species has been around for well over a decade. Then, in 2008, Svante Pääbo and his team at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, pulled off the master stroke of teasing DNA out of millennia-old Neanderthal bones in quantities great enough to sequence.
This provided an obvious way to find out if Homo sapiens had bred with Neanderthals (Homo neanderthalensis): you could simply look within the genomes of living people for DNA sequences with distinctly Neanderthal patterns of mutations. These comparative studies revealed that early humans had indeed mated with Neanderthals, and not just once. Current estimates are that the genomes of everyone except Africans are between 2 and 4 per cent Neanderthal.
The most-likely explanation is that soon after that migration, a group of humans became isolated while the rest bumped into and mated with Neanderthals. “If you like, it’s a third branch,” says Chris Stringer of the Natural History Museum in London – a branch that is distinct from the humans who had stayed in Africa and the ones who were gradually spreading out across Eurasia, Australia and eventually into the Americas.
Because there are no known fossils belonging to Basal Eurasians, it is impossible – for now – to say why they were isolated. Perhaps it was just down to where they settled, far from other groups. Or maybe they developed cultural differences. Either way, these ghosts didn’t mix with the rest of humanity for millennia – long enough to evolve distinct genetic markers.
The Basal Eurasian research showed that rich insights into human history can be gleaned from DNA alone. But, like the Neanderthal and Denisovan studies, it relied on obtaining DNA from fossils, something that remains a huge challenge. DNA degrades with time, so it takes special fossils and special skills to extract it from very old bones, particularly ones that have spent thousands of years buried in hot climates.
However, in the mid-2000s, geneticists were already discussing another approach. Among others, Jeffrey Wall, now at the University of California, Los Angeles, and Vincent Plagnol, now at University College London, suggested that it might be possible to spot signs of extinct populations in the DNA of modern humans, simply by using clever statistics.
The broad idea is that all DNA is subject to random mutations that accumulate over millennia and are passed down from generation to generation. By looking at mutation patterns in modern populations, it is possible to spot segments that don’t
match the usual H. sapiens pattern. These are presumed to come from populations that evolved separately from our own species for thousands of years before mating with humans. Statistical modelling can then produce estimates of when the two groups mated and how different the other population was from our ancestors.
The past few years have seen several attempts to refine these methods and apply them to Africa – the birthplace of our species and the setting for a slice of our history that we know very little about. This new research has revealed the presence of at least one ancient ghost on the continent.
About 50,000 years ago, ancient humans in what is now West Africa apparently procreated with another group of ancient humans that scientists didn’t know existed.
There aren’t any bones or ancient DNA to prove it, but researchers say the evidence is in the genes of modern West Africans. They analyzed genetic material from hundreds of people from Nigeria and Sierra Leone and found signals of what they call “ghost” DNA from an unknown ancestor.
Our own species — Homo sapiens — lived alongside other groups that split off from the same genetic family tree at different times. And there’s plenty of evidence from other parts of the world that early humans had sex with other hominins, like Neanderthals.
That’s why Neanderthal genes are present in humans today, in people of European and Asian descent. Homo sapiens also mated with another group, the Denisovans, and those genes are found in people from Oceania.
Denisovans, A Mysterious Kind Of Ancient Humans, Are Traced To Tibet
The findings on ghost DNA, published in the journal Science Advances, further complicate the picture of how Homo sapiens — or modern humans — evolved away from other human relatives. “It’s almost certainly the case that the story is incredibly complex and complicated and we have kind of these initial hints about the complexity,” says Sriram Sankararaman, a computational biologist at UCLA.
The scientists analyzed the genomes of 405 West Africans. Sankararaman says they used a statistical model to flag parts of the DNA. The technique “goes along a person’s genome and pulls out chunks of DNA which we think are likely to have come from a population that is not modern human.
“They have been obsessing over our story for 3k years,why would they stop now?!? The play has been to deny us our story,when that didn’t work they stared lying about our story,when that didn’t work they tried to distort our story,when that didn’t work,they have decided to infiltrate and lay the seeds of doubt about our story! They want to re-tell our story now,they want to manipulate the narrative behind the story so they can explain way the importance of each and every item associated with our story! Do not believe what they say,do your own research. Read all the Elder books that have been created to inform and teach you,don’t allow other people(who don’t like you)to tell your story! Take control of the narrative,YOU decide if you want to believe information that’s been discovered (by them)or presented. Remember: You are the First and only Hue-Man! Sungod64